david@ukma.UUCP (David Herron, NPR Lover) (08/16/85)
I'm about to finish writing a driver for the parallel part of the dmf-32
(This is for 4.2BSD on vaxen). (See my other posting where I'm asking
for help doing DMA on a 750).
The driver I'm starting from is the one distributed with BRL-Unix.
It does full-time DMA on the serial ports, and has the LP driver.
I have a driver written by chris@mddc (Is it Chris Maloney?) which
does DMA adaptively and also preserves interrupt vector space for
dmf emulators which don't have the parallel/synch ports. I'm going
to be melding his code into the driver. (I'd run his driver under
4.2BSD for a few months without any problems)
My code for the parallel port will come with all the information
I have gained about how the device acts. I've used it in all it's
modes for read, and in dr-11 mode for writes. With the documentation
I'm planning on putting in, it will be a lot easier to use this
device.
I also have a DUP-11 driver and a need to use the synchronous ports
on our system, so am planning on adding support for the synchronous
ports. However if I run out of time I won't. Or, if someone has
already written a driver for the synchronous port I'd like to see
your code.
Would anybody like to get this code? Especially, would UCB like to
distribute this driver with 4.3?
Let me know.
--
--- David Herron
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